| 摘要 |
A solar collector unit adapted to be installed between the studs or rafters of a building, the unit comprising one or more strips of thin metal welded to three parallel tubes, the intermediate tube having a bore larger than the bores of the two other tubes and the tubes being connected to headers so that fluid flowing in the two tubes flows through the intermediate tube and so that connections of a fluid source to the tubes is made at one end of the unit. The headers carry brackets by which the unit may be secured to, and supported by, the studs or rafters. The sunlight receiving side of the unit is covered by glazing secured to the building and the opposite side is covered by insulation.
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